Hire the Best Encryption Professionals

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Rating is 4.7 out of 5.
4.7/5
Based on 505 client reviews

Mihir B.

Senior Full-Stack Developer | Web, Mobile, SaaS, AI & Cloud Solutions

Surat, India
$10 per hour
18 jobs

๐Ÿ‘‹ Hello, I'm Mihir Bhojani, a Full-Stack Developer | Web, Mobile & AI Solutions With 6+ years of experience, I help startups and growing businesses turn ideas into digital products that actually hold up at scale, from early-stage MVPs to platforms used by thousands of people daily. I handle the full development cycle myself, so you are not stuck managing five different freelancers who don't talk to each other. ๐ŸŽฏ ๐Ÿš€ Core Expertise โœ… Full-Stack Web Development React.js, Next.js, Node.js Custom Web Applications SaaS Platforms Admin Dashboards & Portals Enterprise Solutions ๐Ÿ“ฑ Mobile App Development Flutter (iOS & Android) Cross-Platform Applications Firebase Integration Real-Time Features Push Notifications โ˜๏ธ Backend & Cloud Solutions REST APIs & Third-Party Integrations Authentication & Security Database Architecture AWS, Firebase & Cloud Services Scalable Infrastructure ๐Ÿค– AI & Automation ChatGPT Integration AI Assistants & Chatbots Workflow Automation Content Generation Systems Smart Business Applications ๐Ÿ’ผ What You Can Expect โœ”๏ธ Clean & Maintainable Code โœ”๏ธ Scalable Architecture โœ”๏ธ Fast Communication โœ”๏ธ On-Time Delivery โœ”๏ธ Business-Oriented Solutions โœ”๏ธ Long-Term Support I care about whether what I build actually moves the needle for your business, more users, smoother operations, fewer manual processes eating up your team's time. ๐Ÿ“ˆ ๐Ÿ“ฉ Drop me a message or invite me to your job, I usually respond within a few hours and I am happy to hop on a quick call to discuss your project before you commit to anything. Let's talk!

Aaryan S.

Penetration Tester | Web API Android iOS | CEH v13 | SOC 2 & ISO

Rohtak, India
$30 per hour
46 jobs

If your SaaS product handles user data, processes payments, or is heading toward SOC 2 or ISO 27001 โ€” your attack surface needs to be tested before your auditor finds it for you. I'm Aaryan Saharan, an independent penetration tester with 4+ years of hands-on experience across web, API, Android, and iOS targets. I hold CEH v13 and PhD-CSA credentials, and I work with the same tools used by enterprise security teams: Burp Suite Pro, Invicti Enterprise, Nuclei, Trivy, and Garak for AI/LLM attack surfaces. What I test: โ€” Web applications (OWASP Top 10, business logic flaws, multi-tenant isolation) โ€” REST & GraphQL APIs (auth bypass, mass assignment, injection, rate limiting) โ€” Mobile apps โ€” Android & iOS (insecure storage, certificate pinning, reverse engineering) โ€” AI/LLM applications (prompt injection, model extraction, OWASP Top 10 for LLMs) โ€” Cloud & container environments (misconfiguration, privilege escalation via Prowler & Trivy) My methodology follows OWASP, PTES, NIST, and MITRE ATLAS โ€” so findings map directly to the frameworks your compliance team already speaks. Every engagement includes: โ€” A clear scope document before work begins โ€” Real-time Jira-integrated ticket tracking (so your dev team sees findings as they're discovered) โ€” A professional PDF report with CVSS-scored findings, reproduction steps, and fix guidance โ€” A re-test to verify patches hold I work with funded startups, scale-ups, and product teams running release-based or continuous security programs. If you need a one-time pre-launch test or an ongoing retainer, I can scope either. Let's talk about what you're building โ€” and what an attacker would see when they look at it.

John M.

Expert Penetration Tester | AppSec | Upwork Expert Vetted | CEH | OSCP

Bengaluru, India
$89 per hour
49 jobs
$20K+ total earnings

๐Ÿ”ข As an Upwork Top 1% Expert Vetted ๐Ÿ‘‘ OSCP+, Certified Ethical Hacker and an Experienced Penetration Tester with 10+ years of experience Penetration Testing Web SaaS and Mobile based applications and networks, every flaw tells a story; I write the ending and specialize in helping my clients strengthen their cybersecurity defenses. An average Cybersecurity Incident in your business can you cost you anywhere between $120,000+ to $1.24+ million and even a 10%+ reduction in risk can save your business nearly $124,000+ and hiring a full time in-house team can cost you $100,000+ per employee per year. That is why you need an expert like me to protect your business and reduce your business risk. What makes me stand out from other freelancers is the fact that I am also a Cybersecurity Architect, capable of architecting solutions to enhance the security of your organisation and preserving the security and integrity of your data. I have always been passionate about solving technical problems for my clients through Pen Testing and I don't rest till I get to the root of the problem and solve it. What I can offer? I can help you secure your business by providing the following services: โœ… Web/Mobile Application Penetration Testing, โœ… Secure Source Code Analysis, โœ… Network Penetration Testing, โœ… Secure Architecture Review, โœ… API Security Testing, ย ย  โœ… SOC 2, ISO 27001, PCI DSS, AMAZON SP and Compliance-Oriented Penetration Test Reports โœ… Secure Code Review, โœ… CASA Assessment, โœ… Red Team Assessment, โœ… Phishing Simulations & Assessment. Why Choose Me? ๐Ÿง‘๐Ÿผโ€๐Ÿ’ผ Client-Centric Approach: Your security is my top priority. I work closely with your team to understand your objectives and deliver tailored services that align with your business goals. Trust and transparency are the cornerstones of my practice, and I am committed to helping you navigate the complex landscape of cybersecurity with confidence and achieve compliance. ๐Ÿ“ Comprehensive Security Assessments: I conduct detailed SOC Type 2 / ISO compliant evaluations to identify vulnerabilities in your network, applications, and infrastructure. โœ‚๏ธ Tailored Solutions: Every organization is unique. I customize my approach to meet your specific security needs and industry standards. ๐ŸŽฌ Actionable Recommendations: Post-assessment, I provide clear, concise, and practical remediation steps to address identified vulnerabilities. ๐Ÿ” Ongoing Support: Cybersecurity is an ongoing process. I offer continuous support and re-assessment to ensure your defenses remain robust against evolving threats ๐ŸŒ Holistic Approach: I don't just patch vulnerabilities; I architect comprehensive security solutions that align with business goals. My focus extends beyond the technical to encompass risk management and organizational resilience. ๐Ÿ—จ๏ธ Collaborative Communicator: I bridge the gap between technical jargon and business language, fostering understanding across teams. Effective communication is key to successful security implementation. ๐Ÿซ Continuous Learning: The threat landscape evolves, and so do I. Whether it's a new attack vector or an emerging technology, count me in. Learning is my superpower. ๐Ÿ™‹โ€โ™‚๏ธ Key Skills: โœ”๏ธ Penetration Testing & Vulnerability Assessment: I thrive on dissecting systems, identifying weaknesses, and recommending robust solutions. Armed with tools like Kali Linux, Metasploit, Nmap, and Wireshark, I delve into web applications, networks, and APIs. But here's the twistโ€”I don't stop at discovery; I offer a free retest after remediation to ensure vulnerabilities stay sealed. โœ”๏ธ Network Security: I've designed and implemented secure network architectures, ensuring data confidentiality, integrity, and availability. Firewalls, intrusion detection systems, and VPNsโ€”my toolkit covers it all. โœ”๏ธ Cloud Security: Proficient in securing cloud environments especially Amazon Web Services (AWS) & Oracle Cloud Infrastructure (OCI). I stress-test cloud deployments ensuring they withstand real-world attacks. โœ”๏ธ Secure Coding Practices: I advocate for secure coding principles using tools like SonarQube and collaborate with development teams to build resilient applications. Prevention beats cure, every time. โ›๏ธTools I Use โ˜‘๏ธ Penetration Testing: Nmap, Metasploit, Burp Suite Professional, Wireshark, SQLmap, Kali Linux โ˜‘๏ธ Programming & Scripting Skills: Python, Bash, PowerShell, JavaScript, Java and C# โ˜‘๏ธ Security Frameworks & Standards: OWASP, NIST, CASA, CIA Triad, PCI-DSS ๐Ÿซฑ๐Ÿฝโ€๐Ÿซฒ๐Ÿฝ Let's Connect: Ready to enhance your business/organization's security? Let's chat! Reach out to me here on Upwork, and let's build a safer digital future together. ๐ŸŸข Press '...' button and then โ€˜Send Messageโ€™ button in the top right-hand corner โœ‰๏ธ ๐Ÿšซ No hacking service - I do not provide any hacking services, and I will not engage in any activities that involve gaining unauthorized access to any accounts, systems, or social media platforms. Requests for such services will be declined.

Steffin S.

Senior Web Application & API Penetration Tester | OSCP, OSEP, CREST

Kozhikode, India
$30 per hour
210 jobs

Need a Web Application or API penetration test that goes beyond automated scanner output? Iโ€™m an OSCP, OSEP, OSWP and CREST CPSA-certified Penetration Tester with 100% Job Success, Top Rated status, 190+ completed Upwork engagements and experience delivering 400+ penetration tests and security assessments. I help SaaS companies, startups, e-commerce platforms and enterprise teams identify real, exploitable security weaknesses before product launches, major releases and compliance reviews. My approach is manual-first. I investigate vulnerabilities that automated scanners often miss, including authentication weaknesses, authorization bypasses, IDOR/BOLA, privilege escalation, tenant-isolation failures, business-logic flaws, race condition flaws and chained attack scenarios. CORE SERVICES โ€ข Web Application Penetration Testing โ€ข API Security Testing โ€ข Mobile Application Penetration Testing โ€ข External and Internal Network Penetration Testing โ€ข Active Directory and Infrastructure Assessments โ€ข Thick Client Application Testing โ€ข Security Retesting and Remediation Verification WHAT YOU RECEIVE โ€ข A professional executive and technical report โ€ข Reproducible proof-of-concept evidence โ€ข Risk ratings and CVSS scoring where applicable โ€ข Clear business-impact explanations โ€ข Developer-focused remediation guidance โ€ข Retesting after fixes are implemented Reports can support SOC 2, ISO 27001, PCI DSS, Amazon SP-API, vendor-security reviews and internal audits. Redacted Web Application and API penetration-testing report samples are available upon request. Send me your application type, number of user roles, approximate API endpoints or hosts, testing environment and preferred timeline. I will help you define the appropriate scope, methodology and deliverables.

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